AD NUMBER: 2011-04-04

MANUFACTURER: Pratt & Whitney JT8D-209, -217, -217A, -217C, and -219 Turbofan Engines
SUBJECT: Airworthiness Directive 2011-04-04

SUMMARY: This AD supersedes an existing airworthiness directive (AD) for Pratt & Whitney (PW) JT8D-209, -217, -217A, -217C, and -219 turbofan engines. That AD currently requires revisions to the engine manufacturer's time limits section (TLS) to include enhanced inspection of selected critical life-limited parts at each piece-part opportunity.

This new AD modifies the TLS of the manufacturer's engine manual and an air carrier's approved continuous airworthiness maintenance program to incorporate additional inspection requirements. This AD was prompted by PW developing, and the FAA approving, improved inspection procedures for the critical life-limited parts. The mandatory inspections are needed to identify those critical rotating parts with conditions, which if allowed to continue in service, could result in uncontained failures.

The FAA is issuing this AD to prevent critical life-limited rotating engine part failure, which could result in an uncontained engine failure and damage to the airplane.

FMI:
http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/5C5202AF76E1E86E86257838004F9002?OpenDocument